permission

1[uncountable]the act of allowing someone to do something, especially when this is done by someone in a position of authoritypermission (for something)You must ask permission for all major expenditures.permission (for somebody/something) (to do something)The school has been refused permission to expand.No official permission has been given for the event to take place.She took the car without permission.poems reprinted by kind permission of the author(formal)With your permission, I'd like to say a few words.

2[countable,usually plural]an official written statement allowing someone to do somethingThe publisher is responsible for obtaining the necessary permissions to reproduce illustrations.